|
Do you mean even if CPU idle is off, newer version is still slower? Highest CPU slider position (don't remember if it was left or rightmost position) should mean almost no CPU idle unless nothing is happening. (Make sure to quit and rerun emulation between CPU Idle adjustments)
WASAPI EX has lowest lag (UAE writes sound to buffer that is directly read by sound hardware using PCI DMA), bypasses Windows mixer/resampler etc. But no other program can play sound at the same time.
Portaudio depends on used backend. Portaudio is only useful if you want to use ASIO and sound card has good ASIO implementation. ASIO has very low latency.
WASAPI (shared) is usually good enough except if you want lowest possible latency.
|